Automatic transmission ECU (electronic transmission control unit)
* Controls the operation of the torque converter, planetary gears and actuators.
* Monitors parameters such as vehicle speed, engine speed and gear shift position.
* Adapts to the driver’s driving style, shifting gears at optimal moments.
* Includes features such as Sport and Eco modes, as well as Kickdown.
* Ensures smooth gear shifting and optimal automatic transmission performance.
Manual transmission ECU (electronic transmission control unit)
* Provides assistance functions such as Automatic Transmission Shift (AMT) or Hill Start Assist.
* Monitors parameters such as engine speed and vehicle speed.
* Controls servos or clutch and gear shift actuators.
* Does not adapt to driving style.
* Provides limited functionality compared to the automatic transmission ECU.
Main differences:
* Functionality: The automatic transmission ECU fully controls gear shifting, while the manual transmission ECU performs auxiliary functions.
* Adaptation: The automatic transmission ECU adapts to the driving style, but the manual transmission ECU does not.
*Functions: The automatic transmission ECU usually has more functions, such as Sport and Kickdown modes.
* Complexity: Automatic transmission ECUs are typically more complex due to the need to control the hydraulic system and electronic shifting.